Chicken Enchiladas with Tomatillo Sauce

If you prefer, Monterey Jack cheese can be used instead of cheddar, or, for a mellower flavor and creamier texture, try substituting an equal amount of farmers' cheese.

Makes 10 enchiladas, serving 4 or 5 as a main dish.

Sauce
2	teaspoons vegetable oil or corn oil
1	medium onion , chopped fine (about 1 cup)
3	medium cloves garlic , minced or pressed through garlic press (about 1 tablespoon)
3/4	pound small tomatillos , husks and stems removed, each tomatillo quartered (about 1 1/2 cups)
3	large jalapeño chiles , seeded and coarsely chopped (about 1 cup)
1	teaspoon granulated sugar
1/2	teaspoon table salt
Filling
2	teaspoons vegetable oil or corn oil
1	medium onion , chopped (about 1 cup)
1	tablespoon ground cumin
12	ounces boneless, skinless chicken thighs (about 4 thighs), trimmed of excess fat and cut into 1/4-inch-wide strips
1/2	cup chopped fresh cilantro leaves
8	ounces sharp cheddar cheese , grated (2 cups)
Tortillas and Toppings
10	corn tortillas (six-inch)
	Vegetable cooking spray
3	ounces grated sharp cheddar cheese (3/4 cup)
3/4	cup sour cream
1	avocado , diced medium
5	leaves romaine lettuce , washed, dried, and shredded
2	limes , quartered

1. FOR THE SAUCE: Heat oil in medium saucepan over medium-high heat until hot and shimmering but not smoking, about 2 minutes; add onion and cook, stirring occasionally, until softened and beginning to brown, about 5 minutes. Add garlic, tomatillos, jalapeños, sugar and salt; cook, stirring constantly, until fragrant, about 30 seconds. Add 1/3 cup of water and bring to a simmer; reduce heat to medium-low and simmer, uncovered, until tomatillos are softened, about 8 minutes. Transfer mixture to blender and puree until smooth, about 30 seconds; set aside. Rinse out saucepan. 2. FOR THE FILLING: Heat oil in saucepan over medium-high heat until hot and shimmering but not smoking, about 2 minutes; add onion and cook, stirring ocassionally, until beginning to soften and brown, about 3 minutes, then reduce heat to medium and continue to cook until browned, about 3 minutes longer. Add cumin and cook, stirring frequently, until fragrant, about 15 seconds. Add chicken and cook, stirring frequently, until chicken is cooked through, about 5 minutes. Transfer chicken mixture to large plate; freeze for 10 minutes to cool, then combine with cilantro and cheese in medium bowl and set aside. 3. Adjust oven racks to upper- and lower-middle positions and heat oven to 300 degrees. 4. TO ASSEMBLE: Follow illustrations to heat tortillas and fill, roll, and sauce enchiladas. Cover baking dish with foil. Bake enchiladas on lower-middle rack until heated through and cheese is melted, 20 to 25 minutes. Uncover and serve immediately, passing sour cream, avocado, lettuce, and lime wedges separately. STEP BY STEP: Assembling Enchilidas

1. Smear entire bottom of 13 by 9-inch baking dish with 3/4 cup chili sauce.	2. Place tortillas on two baking sheets. Spray both sides lightly with cooking spray. Bake until tortillas are soft and pliable, about 4 minutes.
3. Place warm tortillas on counter-top. Increase oven temperature to 400 degrees. Place 1/3 cup filling down center of each tortilla.	4. Roll each tortilla tightly by hand and place in baking dish, side by side, seam-side down.
5.Pour remaining chili sauce over top of enchiladas. Use back of spoon to spread sauce so it coats top of each tortilla.	6. Sprinkle 1/4 cup grated cheese down center of enchiladas.

from Cooks Illustrated